CN1122784A - Composite silicate cement and prodn. method and equipment thereof - Google Patents
Composite silicate cement and prodn. method and equipment thereof Download PDFInfo
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- CN1122784A CN1122784A CN94113834A CN94113834A CN1122784A CN 1122784 A CN1122784 A CN 1122784A CN 94113834 A CN94113834 A CN 94113834A CN 94113834 A CN94113834 A CN 94113834A CN 1122784 A CN1122784 A CN 1122784A
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- cement
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- shale
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Garbage, shale and clay are used as raw materials, and an artificial volcanic ash mix-material is prepd. by calcining raw materials in vertical kiln. This cement is obtained by mixing admixture with portland cement as matrix, and the adminture is 30-40% and at most up to more than 60 percent. Its compressive strength is only decreased by 3.3-7.7 percent as compared with that of 28d clinker and its stability is increased. Advantages: early slrength, stability, hig hardness and anti-abradability, low permeability, simple production technique, low cost, and favourable to environmental protection.
Description
The present invention relates to environment protection and composite Portland cement technology; especially composite silicate cement and be raw material with clay, shale and rubbish; make artificial volcanic ash blended material; carry out the method and apparatus that volcano grey matter composite Portland cement is produced, and the technology for the treatment of refuse.
Present known correlation technique has: the big profit of Australia works out a kind of " producing the concrete light weighting material with rubbish ", is to form with rubbish and the roasting of clay hybrid process, and purpose is to make light filler for treating refuse.
" Japan utilizes the rubbish ash to make material of construction " is rubbish directly to be burned make.
" this cement company development and use junked tire rotary kiln calcining fuel substitute of the CR Ka Laiwei rubbish of California, USA ", and " the utilization of waste material technology in U.S.'s Cement industry " etc., purpose is the treating refuse save energy.
Number of patent application " 9110167 " utilizes domestic waste to make the brick technology, is a brick-making technology that uses clay treatment rubbish, and its product is building block.
" doing to mix the village with aluminium sulfate slag and pyrite slag, produce composite Portland cement ", is to the direct utilization of refuse in a kind of Cement industry.
" Beijing works out domestic refuse nature incineration technology ", being to use ignition dope to make waste incineration is the concrete weighting material.
Application number: 931025567 " porous material from refuse " are the ceramic porous article materials that utilizes rubbish and heaving shales to make, as the concrete light stopping composition.
The present invention is research and a kind of complex silicon salt cement and production method and equipment is provided, the technology of environment is administered in treating refuse simultaneously, and in the known correlation technique, generally all be that the concrete weighting material is produced in treating refuse, wherein relate to the technology of utilizing refuse in the Cement industry, as the U.S., its purpose and effect all are only limited to energy utilization.The correlation technique of minority treating refuse relates to the blended material of complex cement, makes complex cement as domestic with aluminium sulfate slag and pyrite slag; But the scope for the treatment of refuse is narrow.
Have with this bright relevant reference technique data:
1, China, " building materials industry information " " produces concrete aggregate with the rubbish waste liquid ", 1994 the 10th phases the 17th page of press of (grand light) " building materials industry information " editorial office.
2, China's " building materials industry information " " calcined by rotary kiln fuel substitute---waste and old whole tire ", the 15th page of 1993 the 23rd phase.Yang Wenyan is translated from Britain's " world's cement ", press of " building materials industry information " editorial office.
3, China's " building materials industry information " " utilization of waste material technology in U.S.'s Cement industry ", 1993 the 16th phases the 10th page " building materials industry information " are edited and publish society.
4, China's " building materials industry information " makes blended material with aluminium sulfate slag and pyrite slag, produces composite Portland cement.1994 11 phases the 19th page of (Liu Xuefeng) " building materials industry information " press.
5, China's " building materials industry information " " Japan utilizes the rubbish ash to make material of construction ", the 6th page of (Deng Taotao) " building materials industry information " of o. 11th in 1992 press.
6, the scientific approach in the compound scientific research of cement based " is talked " by China's " building materials industry information ", the 24th page of 1993 the 7th phase, Chen Enyi, Chinese building material periodical publisher.
7, Chinese " patent of invention prospectus " " and the rubbish porous material " application number: 931025567, publication number CN1089246A, open day 1994 7 years 3 days, No. 1456, Patent Office of the People's Republic of China (BJ).
Tellurian rubbish is more and more, and the annual newly-increased rubbish in the whole world is 10,000,000,000 tons according to estimates, closes 2 tons per capita.China whole nation annual discharging industrial solid wastes reach 600,000,000 tons, accumulate surplus the rubbish 5,000 ten thousand tons city year, and increase with annual 10% speed.Many cities face the hidden danger that rubbish surrounds, and garbage problem just makes the mankind face the challenge of unprecedentedly sternly completing.
The objective of the invention is treating refuse improvement environment a kind of composite Portland cement and preparation method and apparatus thereof is provided.
At first be to administer environment for treating refuse, waste incineration is condensed, innoxious and usefulization, and both utilized refuse to make the energy in the realization Cement industry, utilize refuse to make resource again and produce complex cement, not only make the junk changing waste into valuable, and social necessary product---the cement that rubbish is become find oneself greatly elevated in fame and status.
On technology: it is simple to the purpose of this invention is to provide a kind of equipment and production technique, carries out the technology that waste utilizes again in the very cheap Cement industry of cost.
The present invention is achieved in that with rubbish and shale (clay) be raw material, makes the artificial volcanic ash blended material of rubbish through roasting, produces rubbish volcano grey matter complex silicate cement, and treating refuse simultaneously.
The rubbish that the present invention handles is mainly domestic waste, also can be some industrial solid rubbish, as flyash, and coal gangue.
The clay that the present invention adopts, shale is to contain an amount of ferric oxide, silicon-dioxide, clay and shale that aluminium sesquioxide is suitable with the volcanic ash composition with components such as basic metal, alkaline earth metal oxides, wherein three dioxide total contents of sial generally account for more than 70% of mineral total content, are feature to contain a large amount of hydromicas.
This class shale or clay under the condition that keeps reducing atmosphere and calcining at the uniform velocity to carry out, are finished oven dry at 100-500 ℃ with after rubbish mixes, pre-thermolysis under 700-900 ℃ of temperature, and fugitive constituent is separated out; When under 1000-1200 ℃ of temperature, burning till, iron and carbon interact, the reduction reaction of ferric oxide takes place, iron after the reduction and silicate react and form the eutectic low melt, and form eutectic with alkali and alkalimetal oxide, impel melt composition constantly to change the generation recrystallization, the integral body that becomes bonded to one another, roasting material pore reduces rapidly, sharply shrink, weight obviously reduces, and appearance color changes, and forms the artificial puzzolana cement's blended material that has than lightweight and high-strength ceramic feature through cooling.
After with this class shale (clay) and rubbish intermingling, when 1000-1200 ℃ of high temperature are lowered to kiln acceleration roasting, iron and carbon interact, the reduction reaction of ferric oxide takes place, iron after the reduction and silicate react and form the eutectic low melt, when arriving fusing point when being heated, expanding simultaneously forms ceramic porous article, promptly becomes calcareous addition of volcano through cooling.
In roasting, the rubbish some becomes ash to the greatest extent as residue, and some is reacted and chemical combination by clinkering or participation., several sections high-temperature roastings, thermalization make garbage harmless because reacting.Owing to during incineration firing, self discharge a large amount of heat energy, thereby the energy quite partly be provided.
Roasting apparatus of the present invention is achieved in that its stove is vertical shaft kiln, and the shaft furnace housing can be garden shape or square building, and edge sandstone or refractory brick make it be built into the interior garden of pyriform (billiard table shape) in the frame, and its cross-sectional sizes is decided with output.Be provided with vent-pipe in the kiln, material is driven in the side, and the bottom is provided with drives 2-3 in material mouth.
Production Flow Chart of the present invention is as follows: earlier with shale (clay) and refuse breaking; be mixed together with suitable bunker coal, look rubbish thermal value size, coal consumption only accounts for 2%-7% of weight of material and gets final product; mix becomes spherolite or pelletizing then, and going into the kiln roasting promptly becomes the rubbish calcareous addition of volcano.Also can use its rock grain or sillar directly into kiln, roasting becomes blended material with bunker coal to add rubbish layer by layer.Again with its blended material and silicate cement mix and become a kind of complex silicate product salt, i.e. rubbish Portland pozzolana cement.Its mix can be levigate jointly with cement clinker, also can distinguish levigate careful again mix.
The present invention is owing to become useful raw material to garbage waste material, and rubbish becomes resource, and national according to statistics accumulative rubbish is above 5,000,000,000 tons.Clay and shale or rubbish that the present invention adopts, its resource all is very abundant, production cost is very cheap, production technique is simple, can be very a large amount of, carry out the manufacturing of this cement mixture very at large, and very a large amount of and the very general production of carrying out the rubbish Portland pozzolana cement, to satisfy the needs of infrastructure construction and various construction works, reach the purpose that environment is administered in a large amount of ten minutes treating refuse widely simultaneously.
Composite silicate cement of the present invention is a kind of hydraulic cement product of excellence, especially have early strong, high hardness and fastness to rubbing, chemical stability, density, and low perviousness etc., the volume of its blended material: be generally 30%-40%, be up to more than 62%.
Because having adopted above is the scheme that raw material is made the rubbish calcareous addition of volcano with shale (clay) and rubbish, and the equipment of thermal technology and shaft furnace formula shaft kiln, can produce composite silicate cement, treating refuse simultaneously, and can reach purpose of the present invention.
The present invention is further described below in conjunction with drawings and Examples.
Accompanying drawing is the longitudinal section structural map of equipment-vertical shaft kiln of being used to make product of the present invention:
Among the figure 1, at the bottom of the pyriform kiln hall 2, kiln 3, drive material mouthfuls 4, kiln face 5, opening for feed 6, ventpipe 7, gas cap
In the accompanying drawings: the interior garden of billiard table shape that pyriform kiln hall (1) is big up and small down, (2) connect with discharge port (3) at the bottom of its kiln, kiln face (4) connects with opening for feed (5), ventpipe (6) can be located in the kiln, but preferably being located at the bottom of the kiln, is empty except that blast cap (7) is arranged at the bottom in the kiln so fully, and the shaft furnace height preferably is advisable to be no more than 4 meters, reinforced like this discharging is not only convenient but also fast, the more important thing is and can good treatment grasp the kiln condition.
This equipment is on using method: it feeds in raw material highly once can reach 30-60 centimeters, and roasting time is different with coal wind size, and general about 2-3 hours, a 6M
2The shaft furnace output in cross section per hour can reach more than 1 ton.
This stove equipment both can adopt the rubbish after the pulverizing, and shale (clay) mixes with bunker coal, carried out roasting with the method for interior coal, also coal roasting layer by layer; Rubbish both can be baking mixed with ore (shale or clay), also can add the rubbish roasting layer by layer, " shale " but both ore grinding balling-up.Also can be with its rock grain, sillar directly into the kiln roasting.Under the situation of no refuse treatment, can adopt this equipment, and clay or shale be carried out roasting by its using method, preferably adopting hydrous mica is that the fusible clay and the shale of feature carries out roasting, and carries out the production of complex cement.
Equipment of the present invention when the at the uniform velocity sinter process that adopts dark fiery reducing atmosphere, then can realize not having basically coal smoke and exhaust gas emission to cannot see smog fully on the kiln face, does not have secondary pollution, and environment is had no adverse effects.Its reason with mechanism is: one burns relevant with dark fiery reducing atmosphere at the uniform velocity slowly, it two is that clay and clay minerals in shale composition have the oil suction liposuction to absorb carbonoxide sulfurous gas and nitrogen oxide, absorb organic, hazardous and noxious substances such as fine dust, and as the function of carcinogenic substances such as flavus.
If strengthen coal amount and air quantity, carry out the quick sinter process of shallow fiery pyritous (firing time only needs about 15 minutes), the blended material of its preparation (is feature with the porous), then quality is more good, and output also will become the raising of several times; But bigger exhaust gas emission is arranged, need carry out off gas treatment.
In the present embodiment, the rubbish of employing is mainly domestic waste, and its rubbish grade varies in different localities, and can be that inorganics is main, also can be that organism is main, and what adopt in the test of present embodiment is the domestic refuse of Fuling City.Account for 20%-50% of ore materials respectively with rubbish content, test, part rubbish such as flyash and coal gangue have also been done test, except that the too high coal gangue incorporation of sulfur-bearing was unsuitable too high, its incorporation all can reach 20%-50%.
The raw material that among the embodiment the present invention is adopted except that rubbish, is also tested clay and shale, especially to different regions, hydromica shale and the water cloud matrix clay of different geologic times have carried out extensive experimentation, its numbering, collecting location, geologic time, layer position, lithology is as follows:
Numbering: B-1 collecting location Sichuan WuLong, ordovician period geologic time, layer position " five peaks " group, lithology: black shale is a feature with hydrous mica mineral and graptolite fossil, and chemical composition and volcanic ash composition are similar, wherein SiO
2Content is 70.19%, AL
2O
3Be 8.95%.
Numbering: W
1Collecting location Sichuan WuLong, Silurian Period geologic time, " Han Jia shop " group, yellow, yellow ash---yellow-green colour shale is feature with the hydrous mica, and its chemical constitution is consistent with the volcanic ash composition, SiO
2+ AL
2O
3Sum total is 76.74%.
Numbering: S-2 collecting location Sichuan WuLong, geologic time: the Silurian Period, layer position: " Longma small stream " group, lithology: black---grey shale is characterized in that one overlaps the graptolitic facies shale of hydrous mica, main chemical compositions: SiO
2Be 72.64%, AL
2O
3Be 12.32%, Fe
2O
3Be 5.45%, suitable with the volcanic ash composition.
Number: Jg, collecting location, Fuling City, geologic time: jurassic period, layer position: " gravity flow is group also ", lithology: the grey black look, ash---yellow shale is characterized in that one overlaps the hydromica shale of shell phase, SiO
2+ AL
2O
3Total content is 76.31%, and chemical ingredients is very consistent with the volcanic ash composition.
Numbering: rich 1-3, the collecting location Fengdu, in the Triassic period of geologic time, layer position: thunder mouth slope group, lithology: Huang-yellow-green colour shale.Be the meltable shale of low temperature
Numbering: Ch collecting location: the Chongqing City, jurassic period geologic time, layer position: the gravity flow well group, lithology: black, ash-lark shale is characterized in that one overlaps the hydromica shale of shell phase, chemical ingredients is very consistent with volcanic ash.
Numbering: TY, collecting location: Tianjin, geologic time: in the quaternary period, lithology: the grey black look is than the matter clay, SIO in the chemical ingredients
2+ ALO
3Sum total is 70.33%, and composition is also consistent with volcanic ash.
In above clay and the shale, it writes B-1, W
1, Jg, TY add its domestic refuse of 20%-50% respectively or flyash has been done test, to numbering Ch, Jg, TY done respectively added garbage not the time than test, test-results all can be as the ideal blended material, and all can produce excellent complex cement.
When the grog label 525 when above, the blended material blended amount is to account for 30%-40% of total material, the highest incorporation 62%, the ultimate compression strength of the composite Portland cement 28d of its production is all more than 42Mpa.
When domestic traditional blended material was produced composite Portland cement volume 25% left and right sides, the ultimate compression strength of 28d generally reduced by 10%-20% than clinker strength, and the volume of its blended material of the present invention is 30% o'clock, and the ultimate compression strength of 28d only reduces by 3.3%-7.7%.
Product of the present invention---though rubbish and volcanic ash composition in the composite Portland cement are complicated; But all be a kind ofly can change hardening of cement and cement structures and performance and exert an influence, and reach the material of certain strength ratio, research by latest domestic belongs to blended material, but because the composition of its blended material is mainly the volcanic ash composition, so belong to volcano grey matter category, with itself and silicate cement mix, promptly become a kind of complex cement-rubbish Portland pozzolana cement of excellence, and all improved its soundness greatly.
In July, 1986 is in the meeting of the 8th international cement chemistry, famous coagulating cement self-taught expert: professor Menta of the U.S. once pointed out: " as if when hardened cement paste and concrete being needed separately and the isolated group branch that describe its feature up hill and dale when constituting by those no longer to be regarded as, this illustrates that we have reached the weight break point of cement research ".
Towering like a mountain peak modern, the key problem that exists in the Vertical Kiln for Cement Production is a stability problem, even add slag or prolong its staging life often also of no avail.
One of key character of the present invention can solve the stability of manufacture of cement exactly.Take blended material of the present invention to make adulterant, not only soundness of cement had no adverse effects, and can make the cement of stability difference, thus the crisp cement of stability to reach stability qualified.Particularly being used in those with the full syzygy number batching of high lime, carrying out the Cement industry that cement of high index is produced, is very suitable.
Product of the present invention removes and utilizes its early strength height, high hardness and fastness to rubbing and low advantageous feature such as perviousness can be made special purpose, outside water-repellent cement, road surface cement, the suitability of other application facet is a Portland pozzolana cement, and slag cement is identical.And can replace slag to make cement admixture fully, this Cement industry of going into factory for no slag has practical significance.
Claims (10)
1, composite Portland cement is the hydraulic cement that contains the active silica-alumina composition, and feature of the present invention is to contain the composite silicate cement of rubbish roast composition and artificial volcanic ash composition.
2, according to claim 1, contain rubbish roast composition, it is characterized in that it can being the roasting composition that contains domestic waste, also can be the roasting composition of industrial solid rubbish.
3, according to claim 1, contain artificial volcanic ash composition, it is characterized in that containing the roasting composition of hydromica shale and water cloud matrix clay.
4, according to claim 1, composite silicate cement is characterized in that having the early strength height, high hardness and fastness to rubbing, low perviousness, the composite Portland cement of premium propertiess such as good security.
5, according to claim 4, the composite Portland cement of premium properties is characterized in that as highway pavement cement water-repellent cement.
6, composite Portland cement is that silicate cement and active mixed material are made, and feature of the present invention is to be that the artificial volcanic ash blended material that raw material is made through roasting is an adulterant with rubbish and shale, clay, forms for the base material mix with the silicate cement.
7, according to claim 6, be raw material with rubbish and shale, clay, it is characterized in that rubbish can be domestic waste, also can be industrial refuse.
8, according to claim 6, with rubbish and shale, clay is raw material, it is characterized in that containing hydromica mineralogical composition, high sial chemical ingredients, and the meltable shale suitable with the natural volcanic ash chemical ingredients and clay and other meltable shale, clay are raw material.
9, according to claim 6, form blended material through roasting, it is characterized in that in billiard table shape pyriform kiln, carrying out the roasting of artificial volcanic ash blended material, its ventilation opening and airduct can be located at the bottom of the kiln.
10, according to claim 9, in billiard table shape pyriform kiln, carry out the roasting of artificial volcanic ash blended material, it is characterized in that, under the situation of no refuse treatment, what can carry out added garbage not with this pyriform kiln is the roasting of the volcano fire blended material of raw material with hydromica shale, hydromica clay, and makes composite Portland cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94113834A CN1122784A (en) | 1994-11-11 | 1994-11-11 | Composite silicate cement and prodn. method and equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94113834A CN1122784A (en) | 1994-11-11 | 1994-11-11 | Composite silicate cement and prodn. method and equipment thereof |
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| Publication Number | Publication Date |
|---|---|
| CN1122784A true CN1122784A (en) | 1996-05-22 |
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|---|---|---|---|
| CN94113834A Pending CN1122784A (en) | 1994-11-11 | 1994-11-11 | Composite silicate cement and prodn. method and equipment thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064028C (en) * | 1998-12-21 | 2001-04-04 | 李桓宇 | Lightweight non-sintered bricks made from coal cinders |
| CN1091432C (en) * | 1999-11-18 | 2002-09-25 | 魏仁涛 | Technological process and subsidiary equipment for cement production in vertical kiln with directly added garbage |
| CN101913787A (en) * | 2010-07-23 | 2010-12-15 | 四川利森建材科技开发有限公司 | Method for calcining and activating shale into cement admixture |
| CN105793209A (en) * | 2013-12-04 | 2016-07-20 | 蒂森克虏伯工业解决方案股份公司 | Method for producing a pozzolanic or latent-hydraulic cement clinker substitute |
-
1994
- 1994-11-11 CN CN94113834A patent/CN1122784A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064028C (en) * | 1998-12-21 | 2001-04-04 | 李桓宇 | Lightweight non-sintered bricks made from coal cinders |
| CN1091432C (en) * | 1999-11-18 | 2002-09-25 | 魏仁涛 | Technological process and subsidiary equipment for cement production in vertical kiln with directly added garbage |
| CN101913787A (en) * | 2010-07-23 | 2010-12-15 | 四川利森建材科技开发有限公司 | Method for calcining and activating shale into cement admixture |
| CN105793209A (en) * | 2013-12-04 | 2016-07-20 | 蒂森克虏伯工业解决方案股份公司 | Method for producing a pozzolanic or latent-hydraulic cement clinker substitute |
| CN105793209B (en) * | 2013-12-04 | 2019-01-11 | 蒂森克虏伯工业解决方案股份公司 | The method for being used to prepare volcanic ash or latent hydraulicity clinker substitute |
| US10294152B2 (en) | 2013-12-04 | 2019-05-21 | Thyssenkrupp Industrial Solutions Ag | Method for producing a pozzolanic or latent-hydraulic cement clinker substitute |
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